The work done in the expansion of a gas
from, volume V1 to V2 under constant pressure P is equal to:
Zero
P(V2 - V1)
P(P2 + P1)
P(V2 - V1)
The work done in the expansion of a gas
from, volume V1 to V2 under constant pressure p
is equal to,
Work, 
Hence, the correct option is (B).
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